Means for automatically circulating cooling-water in plate-casting boxes.



H. F. BECHMAN. MEANS FOR AUTOMATICALLY CIRGULATING COOLING WATER INPLATE CASTING BOXES APPLICATION FILED JAN.4.19|5. 1,250,772. PatentedB00318, 1917 L 3 SHEETS-SHEET l.

EEE; .1..-

T 6 M SMLLLLM H. F. BECHMAN. MEANS FOR AUTOMATICALLY CIRCULATING COOLINGWATER IN PLATE CASTING BOXES.

' APPLICATION FILED 1m.4.1915.

1,250,772. A A I Patented Dec. 18, 1911.

3 SHEETS-SHEVET 2.

- H. F. BECHMAN. I MEANS FOR AUTOMATICALLY CIRCULATING COOLING WATER INPLATIE CASTING BOXES I APPLICATION FILED IAN. 4| I9I5.

1,250,772. r Patented Dec. 18,1917.

3 SHEETS'SHEET a.

, UNITED STATES "PATENT ()FFIOE.

HENRY F. BECHMAN, OF BATTLE CREEK. MICHIGAN, ASSIGNOR T DUPLEX PRINTINGPRESS COMPANY, OF BATTLE CREEK, MICHIGAN, A CORPORATION 03! MICHIGAN-MEANS FOR AUTOMATICALLY CIRCULATING'bOOLING-WATEB IN ?I4ATE.-CASTINGBOXES.

Specification of Letters Patent.

Patented Dec. 18, 1917.

To all whom it may concern:

Be it known thatl, HENRY F. BEGHMAN,

- a. citizen. of the United States, residing at Plate-Casting Boxes; andI hereby declare that the following is a full, clear, and exact.

Battle Creek, in the county of Calhoun and State of Michigan, haveinvented certain new and useful Improvements in Means for AutomaticallyCirculating Cooling-Water in description thereof, reference being had tothe accompanying drawings, which form part of this specification.

This invention relates to stereotype plate casting boxes, and its objectis to provide means for maintaining the parts of the cast ing box at a.temperature most suitable for plate casting while pi'eventingoverheating thereof, and this is allowed by novelmeans for automaticallycirculating water, or other suitable cooling medium, through the por-.tions of the casting box sub1ect'ed to the most intense heat, so thatsuch parts will be protected from injury and the box main-- tained at asubstantially uniform temperature which will enable plates to becastmore uniformly and with greater rapidity than has been heretoforepractical with casting "boxes of the same general type but to which theinvention has not been applied. The invention increases the efiiciencyof the box and obviates much ofthe trouble which has been heretoforeexperienced in attempting .for working.

to keep such boxes at the best temperature The invention is particularlydesigned for use in connection; with stereotype casting boxes of thetype shown in my. Patent No.

945,678, of January 4, 1910, and application Serial No. 866,295, filedOctober 12, 1914,

'which latter covers the construction of the box illustrated in Figures1 to 4 of the drawing sj but the invention is applicable tosemicylindrical plate casting boxes such as shown for example, in myPatent No. 853,752, of May, 14, 1907. ,I will explainithe inventionas'applied to such boxes.

In said drawings:

Fig. 1' is a diagrammatic-sectional elevation of asetof casting boxesshowing the automatic water; circulating system. l a

Fig. 2 is a diagrammatic sectional elevation of a single casting box andits automatic water mulating'system.

Fig. 3 is adiagrammatic sectional elevation.

Fig. 4 is atop plan view of one of the casting boxes.

Fig. 5 is a diagrammatic sectional elevw.

tion of the invention applied to a semicylindrical plate casting box.

As shown in Figs. 1 to 4 of the drawings, the box comprises a base 7 towhich are secured side frames 5 upon which is mounted a drag 1 providedwith a semio'ylindric recess in its front face to receive the core'2when the latteris in casting position. To

the drag 1 is lunged a cope 1 which can swing to and from the drag, andhas a semicylindric recess in itsinner fiace so thatwhen the box isclosed, as indicated in Fig. 4, the opposed recesses in the drag andcope form a true cylindric chamber.

The core 2 is mounted on trunnions as usual journaled in the side frames5, so. that said core can be moved to a position axially of the saidchamber, (Figs. 1, 2 and (4:

when a plate is to be cast; or can be tilted outwardly when the box isope'ned'as indi-' cated in 'Fi 3.

-In such boxes it is desirable to cool the core, or part with which themolten metal directly contacts, duringthe casting operations, andtherefore (in the box shown in Figs. 1 to 4 of the drawings) the core ismade hollow and is provided with internal.

pipes 11 and 12. One of these pipes 11 communicates at bottom with apassage 3 leading through one of the trunnions and connected to an elbow4f at the outer end of the trunnion. The other pipe 12 communicates witha passage 3 leading through the other trunnion and connected with anelbow 4.

The elbow 4-is connected by a. hose tion 19 withanipple orunion.8"attached to one of the side frames 5, and this union 8 isconnected with a return pipe. in any suitable manner. The elbow 4' 1sconnected by a hose section 19 with a nipple or union 8 attached to theopposite frame 5, and which in turn is connected to a supply pipe in anysuitable manner.

The parts thus far described.

tially the same as thoseshown in my application No. 866,295 aforesaid,'und are not specifically claimed herein.

are subs'tan- ;tacts during the casting operation, and for this purposethe inlet nlpple 8 is connected by piping l4" to a pipe 14 leading tothelower end of a reservoir or tank 13 mounted on suitable supports, (notshown) at any is ready for casting a I desired elevation above ing boxwhen the latter tion. The outlet nipple/8 is a so connected by iping'15to a pipe 15 leading into the tank 13 at a-p9int above the normal waterline therein, which is indicated at 18 in Fi I.- A water gage 17attached to the tan enables the proper level of water therein to bedetermined. The tank has a vent pipe 16. Water or other suitable coolingmedium can be introduced into the tank 13, as required, through a valvedsupply pipe let and canv be drained from the apparatus when. desired bymeans of a valved drain pipe 15. Any suitable cooling fluid might beused instead of water. a

It will beseen that normally all portions of the pipes 1 1 and 15.(below the water line 18) also connections 19, 19, passages 3, 3, andpipes .11 and 12, and th the top of the castinterior of the core. 2,will be normally filled with the cooling medium by gravity.

The construction of the box and arrangement of parts shown in Figs. 2and 3 are, in general, liketho'se already described. The tank may belocated at any desired point and pipes 14 and 15 may be connecteddirectlv to nipples 8 and 8" as shown.

In Fig. 5 a semi-cyl indric plate casting box, such as shown in myPatent No..

853,752, is represented. In this construction the drag C is hollow andthe cope D can be moved to and from the drag in the usual manner. 'Thepipes 11 and 12 are arranged within the drag, and pipe 11 connects atbottom with a pipe 14 leading to the pipe 14; and the pipe 12' connectsat bottom with a pipe 15 leading to pipe 15.

Referring to Figs. 1 to 4, when the box plate, the core 2 is and thecore and all water line 18 is filled medium. If the water in a verticalposition, the piping below the with water or cooling 1 in the corebecomes heated above the boiling will tend to expel the point duringplate casting operations the steam collects above the pipes Hand 12, andthe-pressure of the steam thus formed water from the pipes 11 12backthrough pipes 14, lfiandintermediate passages into the tank, and thebalance of pressure between pipes 15v and 14 is disturbed, and pipe 14being filled-with cooler water from the reservoir 13, and the mixture ofsteam and water in pipe 15 being -lighter than the column of water in isin operative posi tively from lower tank and to two points onsubstantially the pipe 14,

cooling medium through the box and pipes gravity produces a circulationof inthe direction indicated by the arrows'in- 4 Fig. 1. Thiscirculation of water or coolin medium is constant, or nearly constant,an prevents too sudden cooling of the core by the stereotyper carelesslyturning on too much cold water, and it also prevents overheating oftitle core, because the circulation produced and maintained.-

'cooling medium would be. manner in the construe is automatic lly Thecirculation 0 produced in like tion shown in Fig. 5, and need not bespecifically described.

' In the tubular plate casting boxes shown in Figs. 1 to 4, the coremust be tilted to remove the cast plates, is lowered to remove water,which is at the and mixes with the water at the lower end of the .core,or near the trunnions, thus creating greater uniformity in thetemperature of water in the box. This mixing of the water by tilting thecore facilitates and. augments the desired circulation of coolingmedium.

a plate the heated Anadvantage of this apparatus isthat the box while inuse can be maintained at a temperature of about 200 to 250 degrees,which is desirable when casting plates as at such a temperature theplates will not stick. If cold water is allowed to passsuddenly andirregularly into of the boxis not are chilled unequally while beingcast; and if the box is not properly cooled it'will become so heatedthat the stereotype metal will adhere to the core or drag, practicallybecoming soldered thereto. Heretofore con-' siderable trouble has beencaused through the boxesnot being kept at the proper temperature, butsuch troubles will be entirely eliminated with boxes equipped with myinvention, and plates can: be cast therein as fast as the operators canmanipulate them, for no matter howrapidly the plates are cast the boxeswill not become overheateth at is claimed is:

1. The combination of a casting box, a

and when the core top of the core, shifts the box the temperature;uniform'and the plates tank, and pipe connections extending respe'candupper points in said same level in castin 2. The combination 0 ingacore, a tank, and pipe connections ex? tending respectively from lowerand upper points in .said tank and totwo. points on substantially thesame level; in the core.

box.-

a casting box, hav- 3.. The combination of a casting box having a hollowmember,

a pair of parallel ver-' tically disposed fluid conduits in said memends and at substantially the same level,

.125 bar communicating with the interior there whereby coolin fluid issupplied from said tank to the hol 0w member. 4

4. In a stereotype casting apparatus the combination with a hollowtiltable member, 5 and conduits within said member communieating withthe to part thereof at substentially the same fevel, of a, tank exteriorto the member, and connections between said tank and the conduits in thesaid member for maintaining supply of cooling fluid i0 from the tank tosaid tiltable member.

In testimony that I claim'the foregoing as my vown, I aflix my signaturein presence of two witnesses.

- HENRY F. BECHMAN.

Witnesses:

IRVING K. STONE,

